If hems fray, trim free threads cautiously and keep in mind a short stitch
https://www.livebinders.com/b/3726547?tabid=19338362-2a81-e0cd-c843-157d9567dbf8
If hems fray, trim unfastened threads moderately and be aware a brief stitch. Addressing small hurt early is helping stop further unraveling after laundering.